<?xml version="1.0"?>
<!--
A geysir which appears at regular intervals and becomes stronger and weaker.
An example of changing emitters.
-->
<effect>
  <particle position-x="0" position-y="0" position-z="0">
    <emitter>
      <property name="output" value="2" change-func="sine" change-amplitude="3" change-period="800"/>
      <property name="power" min="1.5" max="2.5" change-func="sine" change-amplitude="3" change-period="800"/>
      <property name="horizontal-angle" min="0" max="360"/>
      <property name="vertical-angle" min="85" max="90"/>
      <property name="image" value="graphics/particles/orb-medium.png"/>
      <property name="gravity" value="0.1"/>
    </emitter>
  </particle>
</effect>
